VZV Speed Limits

5mad-ntuaTransportation5 columns

On November 7, 2014, New York City’s default speed limit was changed from 30 mph to 25 mph. Unless otherwise signed, all streets in New York City are governed by this 25 mph speed limit. Driving at or below 25 MPH decreases stopping distance, gives drivers and pedestrians more time to see each other and react, and improves drivers’ ability to avoid crashes. Pedestrians struck by vehicles traveling at 25 MPH are half as likely to die as those struck at 30 MPH. If crashes do occur, the severity of injuries is reduced a lower speeds. The information shown here was compiled by the New York City Department of Transportation for governmental purposes. The information is updated as soon as reasonably practicable. The public is advised that speed limits are subject to temporary or permanent change and that posted signage must be observed for compliance with laws and regulations. For a complete list of Vision Zero maps, please follow this link

View on NYC Open Data

Quality

A92.5 / 100

From a 500-row sample across 5 columns.

completeness100/ 25% weight

consistency80/ 20% weight

accuracy98/ 20% weight

timeliness99/ 15% weight

usability85/ 20% weight

· No obvious temporal column — limits time-series joins

Related datasets

VZV Neighborhood Slow Zones0.49
joins onshape_lengthe_geom
VZV Signal Timing/25MPH Signal Retiming0.48
joins onshape_lengthe_geom
VZV Street Improvement Projects (SIP) Corridor0.47
joins onshape_lengthe_geom
VZV Arterial Slow Zones0.46
joins onshape_lengthe_geom
VZV Priority Corridors0.44
joins onshape_lengthe_geom

Sample rows

the_geom	street	postvz_sl	postvz_sg	shape_leng
{"type":"MultiLineString","coordinates":[[[-74.0860427132117,40.61882841277749],[-74.08609504193768,40.61852755815658]]]}	VAN DUZER STREET	25	YES	110.567784567
{"type":"MultiLineString","coordinates":[[[-74.02913542083873,40.63538098737866],[-74.02935769808063,40.63484493199372]]]}	RIDGE BOULEVARD	25	NO	204.811899084
{"type":"MultiLineString","coordinates":[[[-74.20951855979499,40.551611793567425],[-74.20920589011216,40.55086093532981]]]}	ALVERSON AVENUE	25	NO

Columns

5 queryable · 4 profiled

The machine field names SoQL needs, with the publisher's own description of each.

Field	Type	Description	Null	Values
`the_geom`	unknown	—	—	—
`street`	text	—	0%	`BELT PARKWAYBROADWAYLONG ISLAND EXPRESSWAY`
`postvz_sl`	categorical	—	0%	`25500`of 10
`postvz_sg`	categorical	—	0%	`NOYESNo`of 3
`shape_leng`	float	—	0%

Query this from your own app

GET /api/datasets/5mad-ntua
GET /api/datasets/5mad-ntua/quality
GET /api/datasets/5mad-ntua/related
GET /api/columns?dataset=5mad-ntua